Round nose bullet design using high-profile curve definition

Abul Jalil, Mujahidah (2016) Round nose bullet design using high-profile curve definition. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

	Text (24 Pages) Round Nose Bullet Design Using High-Profile Curve Definition 24 Pages.pdf - Submitted Version Download (523kB)
	Text (Full Text) Round nose bullet design using high-profile curve definition.pdf - Submitted Version Restricted to Repository staff only Download (1MB)

Abstract

Nowadays, the rapid improvement in technologies causes the conflicts and violence acts all over the world rises day by day and it gives a significant impact to the bullet manufacturing as the demand of military production is high. Hence, the manufacturing industry need to improve the performance and design efficiency of the existing bullet that meet the customer requirement. One of the main problem in military industries is the aerodynamic on a bullet. The study of aerodynamics is vital to improve the design efficiencies and the performance of a bullet. Besides, the improvement of the bullet shape will influence the impact, aerodynamic features and maximize the effectiveness of bullet, and therefore, the concept of C-shaped transition curve is proposed to analyzed the effectiveness of the improvement bullet design due to its shape. Round Nose Bullet is selected as an existing design due to its high aerodynamic and better penetration. Solidworks SimulationXpress and ANSYS Fluid Flow (FLUENT) packages are the software that have been utilized in this research study. The results attained in Linear Static Analysis illustrated that the increment in the deformation and decrement in Von Mises Stress will contribute the improvement design to slowly undergo the failure and the projectile provides better penetration. The prediction of fatigue can be obtained by applying the computation of Newton interpolation polynomial, which indicates that the improvement design will experience the slower failure condition as the value of initial applied pressure, x in improvement designs is higher when compared with existing design. Furthermore, the consistency of bullet design is also validated by computing Coefficient of Variation (CV). According to the CV calculation, improvement design has a lowest percentage rather than existing design so that the concept of Bernoulli principle can be applied in this research study. An increase of velocity in bullet movement occurs simultaneously with a decrease in pressure in the improvement design. Hence, this research shows that the implementation of C-shaped transition curve in improvement design has increased the stability of the bullet and explicit a low resistance during the projectile motion along trajectory.

Actions (login required)

View Item